users = 
`create table if not exists users(
  \`id\` INT NOT NULL AUTO_INCREMENT,
  \`username\` VARCHAR(45) NULL,
  \`password\` VARCHAR(200) NULL,
  \`phone\` VARCHAR(20) NULL,
  PRIMARY KEY (\`id\`),
  
  INDEX \`username_UNIQUE\` (\`username\`) ,
  INDEX \`password_UNIQUE\` (\`password\`) ,
  INDEX \`phone_UNIQUE\` (\`phone\`)
  );`//用户表

module.exports = users;